Diodes PAM2803 - Manual (Page 3)

PAM2803
Document number: DSxxxxx Rev. 1 - 1
3 of 9
www.diodes.com
July 2013
© Diodes Incorporated
PAM2803
A Product Line of
Diodes Incorporated
Thermal Information
Parameter Symbol Package Max Unit
Thermal Resistance (Junction to Case) θ
JC
TSOT26 130
°C/W
Thermal Resistance (Junction to Ambient) θ
JA
TSOT26 250
Internal Power Dissipation P
D
TSOT26 400 mW
Electrical Characteristics
(@T
A
= +25°C, V
IN
= 2.4V, I
LED
= 750mA, V
SHDN
= V
IN
, L = 2.2µH, C
IN
= 10µF, C
O
= 10µF, unless otherwise specified.)
Parameter Symbol Test Conditions Min Typ Max Units
Input Voltage Range V
IN
0.9
V
F
-0.2
(Note 1)
V
Feedback Voltage V
FB
90 95 100 mV
Start-Up Voltage V
START
V
IN
: 0V – 3V, I
LED
= 370mA 0.9 V
Hold Voltage V
HOLD
V
IN
: 3V – 0V, I
LED
: 750mA – 200mA 0.75 V
Oscillator Frequency F
OSC
0.85 1.0 1.15 MHz
SHDN Input High V
SH
V
IN
= 1.8V 1.0 V
SHDN Input Low V
SL
V
IN
= 1.8V 0.4 V
Over Temperature Shutdown OTS 150 °C
Over Temperature Hysteresis OTH 15 °C
Maximum Output Current Range I
O(MAX)
750 mA
Quiescent Current I
Q
I
LED
= 0mA, V
O
= 3.4V,
Device Switching @ 1MHz
1 3 mA
Shutdown Current I
SD
Shutdown Mode 1 µA
Switch On Resistance R
DS(ON)
V
O
= 3.4V 0.1 Ω
Current Limit I
LIM
V
O
= 3.4V 2 A
Efficiency η I
LED
= 750mA 90 %
Note: 1. VF – LED forward voltage.